Edge-chamfering machine.



W. G. EATON. v EDGE GHAMFERING MACHINE.

APPLICATION FILED NOV. 3, 1906. RENEWED MAR. 25, 1912.

1,029,178. Patented June 11,1912.

W'bzesses: [raven/i01 E W &i 4121: W 6 A4 W COLUMBIA PLANOORAPHIO-,WASHINOTON, b. c.

UNITED STATES PATENT OFFICE.

WILLIAM G. EATON, BOSTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

EDGE-CI-IAMFERING MACHINE.

Specification of Letters Patent.

Patented June 11, 1912.

Application filed November 3, 1906, Serial No. 341,834. Renewed March25, 1912. Serial No. 686,009.

To all whom it may concern:

Be it known that I, WILLIAM G. EATON, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented certain new and useful Improvements in Edge-ChamferingMachines; and I .do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to whichit appertains to make and use the same.

In the manufacture of welt shoes and McKay shoes the insole is formedwith a margin of reduced thickness, forming the feather, which bearsagainst the inside of the upper and is in contact with the footof thewearer. To prevent discomfort to the wearer, it is desirable to removethe sharp edge of the feather by beveling or chamfering this part, andthe object of the present invention is to produce a machine for sochamfering the feather edge of an insole prior to its incorporation in ashoe.

The invention consists in the insole chamfering machine herein shown anddescribed, as defined in the claims.

In the drawings, Figure 1 is aside elevation, partly in section, of amachine embodying the present invention. Fig. 2 is a vertical sectionaldetail View looking from left to right of the line wm, Fig. 1. Fig. 3 isa horizontal section through the rotary cutter and the forward part ofthe machine.

The machine is provided with a rotary cutter 1 formed to out upon itsinner side; this cutter is mounted upon a spindle 2 driven by a pulley 3connected with a suit able source of power. The cutter 1 is surroundedby a member 4, the lower part of which serves as a work support, beingarranged so that its inner surface is adjacent to the cutting portion ofthe cutter. The work support projects downwardly from a block adjustablymounted on the frame of the machine and held in position by a clampingbolt 4. The work is held against the work support by a presser roll 5,mounted upon a bell-crank lever 6. The lever 6 is journaled at 7 uponthe frame of the machine and embraces a threaded rod 8 fixed in theframe, upon which is mounted a compression spring 9. The spring bearsagainst the lever 6 and tends to swing it in a direction to force thepresser roll 5 against the work support, the strength of the springbeing adjustable by means of nuts 10 on the rod 8. Stop nuts 11 preventthe presser roll from swinging into cont-act with the cutter whenno workis in the machine. To limit the width of the chamfer produced by thecutter the machine is provided with an edge gage in the form of asomewhat elongated loop 12 surrounding the forward part of the spindlejust inside of the operative portion of the cutter; this edge gage ismounted upon a stem 13 which is vertically adjustable in the frame ofthe machine by means of an adjusting nut 14 provided with an annulargroove engaged by a detent 15 to prevent the nut from rising.

The machine is operated as follows :The cutter being rotated, the marginof an insole is inserted between the presser'roll and the i work supportin the position shown in Fig.

1, and the edge of the insole is pressed upward against the edge gage.The work is then fed by the operator, being held firmly against thecutter and the work support by the presser roll during the operation.

The cutter is preferably so formed as to impart a rounded surface to theedge of the feather rather than a flat bevel, and the work supportmember, since it surrounds the cutter, acts as a guard to catch thechips and dust produced by the cutter and prevent their being thrownabout the machine.

The invention is not limited to the details of construction andoperation of the illus trated embodiment, but may be embodied in otherforms within the scope of the claims.

Having now described the invention, what is claimed is 1. An insolechamfering .machine, having, in combination, a cutter arranged tochamfer the feather of an insole, a work support arranged to engage thesurface of the insole acted upon by the cutter, and

an edge gage adjustable to change the width of the chamfer on thefeather, substantially as described.

2. An insole chamfering machine, having, in combination, a rotary cutterarranged to chamfer the feather of an insole, a work support to engagethe surface of the insole acted upon by the cutter and an edge gage todetermine the width of the chamfer on the feather, substantially asdescribed.

3. An insole chamfering machine, having,'in combination, a rotaryspindle, a cutter mounted thereon and formed to cut on its inner side,an edge gage encircling the spindle at the inside of the cutter andfixed to an adjustable stem, and means for adjusting the stem to movethe operative extremity of the-edge gage toward or from the axis ofrotation of the cutter, substantially as described.

4. An insole-chamfering machine, having, in combination, a rotary cutterformed to cut on one side, a work support having a flat work-supportingsurface perpendicular to the axis of rotation of the cutter and adjacentto the periphery thereof, a springpressed presser for holding the workagainst the work support and the cutter, and an edge gage fordetermining the distance of the edge of the work from the axis ofrotation of the cutter, substantially as described.

5. An insole-chamfering machine, having, in combination, a rotatingspindle, a cutter mounted thereon and formed to cut on its inner side, awork support surrounding the cutter and having a fiat work-supportingsurface perpendicular to the axis of rotation of the cutter and adjacentto the inner side of the cutter, a spring-pressed presser for holdingthe Work against the work-support, and an edge gage located between thepresser and the spindle, substantially as described.

6. An insolechamfering machine, having, in combination, a rotary cutterarranged to chamfer the feather of an insole, a work support arrangedoutside of the cutter in position to engage the surface of the insoleacted upon by the cutter, and an edge gage adjustable to change thewidth of the chamfer on the feather, substantially as described.

7 An insole chamfering machine, having, in combination, a cutterarranged to chamfer the feather of an insole, a work support arranged toengage the surface of the insole acted upon by the cutter, an edge gageadjustable to change the width of the chamfer on the feather and apresser cooperating with the Work support to hold the work in positionto be acted upon by the cutter, substantially as described.

In testimony whereof I atfix my signature, in presence of two witnesses.

M. G. EATON.

Witnesses:

FRED O. FISH, FARNUM F. DORSEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G.

